A QCD-sum-rule plus rescattering calculation finds that X0(2900) as a D*bar K* molecule reproduces the measured B+ to D+X0 branching fraction and X0 to DK width, though a compact tetraquark remains allowed within errors.
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The production and decay of $X_0(2900)$ state with different interpretation
A QCD-sum-rule plus rescattering calculation finds that X0(2900) as a D*bar K* molecule reproduces the measured B+ to D+X0 branching fraction and X0 to DK width, though a compact tetraquark remains allowed within errors.